Facile dry synthesis of sulfur-LiFePO4 core-shell composite for the scalable fabrication of lithium/sulfur batteries

被引：35

作者：

Kim, C. -S. ^{[1
]}

Guerfi, A. ^{[1
]}

Hovington, P. ^{[1
]}

Trottier, J. ^{[1
]}

Gagnon, C. ^{[1
]}

Barray, F. ^{[1
]}

Vijh, A. ^{[1
]}

Armand, M. ^{[2
]}

Zaghib, K. ^{[1
]}

机构：

[1] Inst Rech Hydroquebec IREQ, Varennes, PQ J3X 1S1, Canada

[2] CIC Energigune, Albert Einstein 4801510, Minano Alava, Spain

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2013年 / 32卷

关键词：

Lithium/sulfur battery; Core-shell composite; LiFePO4; Mechano-fusion; Encapsulation; SULFUR BATTERIES; CATHODE; ELECTROLYTE; NANOTUBES;

D O I：

10.1016/j.elecom.2013.03.037

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiFePO4(LFP)-coated sulfur (S-LFP) particles were synthesized using a dry mechano-fusion method and electrochemically tested in a liquid electrolyte. This synthesis process (encapsulation) is completed in a few minutes without a solvent drying step, thus it is easily scalable for volume production. The S-LFP cathode showed an initial capacity of 1200 mAh/g at 0.1 C, and 80% capacity retention after 90 cycles at 0.5 C.417 Wh/kg in specific energy and 623 Wh/I in energy density are achievable with this new technology. The results suggest that the LFP layer enhances the utilization of active sulfur and lowers the polarization for oxidation of Li2S2/Li2S, (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：35 / 38

页数：4

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